Hey everyone,
I was doing some maintenance around this box(Image Below) and i was wondering what exactly it is? Is it a replacement due to the yellow sticker? My car has been having some electrical problems and I just wanted to know if it was linked in any way? Thanks to anyone who helps me out here. -Dave

 

That is the BCM (body control module). It could be the source of your trouble. There may be some codes thrown that could help troubleshooting the source. I had to run wire to it when I installed my remote starter. A FSM should tell you what it has control over. Door locking control for sure.